33.3 Listeriamonocytogenescontamination in foodprocessing
environments
Listeria monocytogenes is an exceptionally well-adaptedpathogen to food
processing environments.Theprevalenceof the organism may be highin
differentfoodprocessing plants(Table 33.1),and the organism can survive
Table33.1 PrevalenceofListeriamonocytogenesin foodprocessingplants
Foodprocessing Listeria Country Reference
plant/ monocytogenes
samplingsite (%)
Meatprocessingplant
Environment 2.3 France Chasseignauxet al.(2001)
14 France Chasseignauxet al.(2002)
4 France Chasseignauxet al.(2002)
Equipment 13 Greece Samelis& Metaxopoulos(1999)
2.8 Greece Samelis& Metaxopoulos(1999)
25 France Chasseignauxet al.(2001)
53 France Chasseignauxet al.(2002)
1.4 France Chasseignauxet al.(2002)
Poultryprocessingplant
Environment 22 UK Hudson& Mead(1989)
29 Ireland Lawrence& Gilmour(1994)
15 Ireland Lawrence& Gilmour(1994)
22 France Chasseignauxet al.(2001)
55 France Chasseignauxet al.(2002)
27 France Chasseignauxet al.(2002)
Equipment 29 UK Hudson& Mead(1989)
20 Finland Miettinenet al.(2001b)
16 France Chasseignauxet al.(2001)
27 France Chasseignauxet al.(2002)
0 France Chasseignauxet al.(2002)*
Fishprocessingplant
Environment 29 Norway R ̆rviket al.(1995)
11 Finland Autioet al.(1999)
28 USA Nortonet al.(2001)*
Equipment 24 Finland Autioet al.(1999)
Dairyprocessingplant
Environment 9.3 France Jacquetet al.(1993)
4.7 Finland Miettinenet al.(1999)
0 Brazil Silvaet al.(2003)
14 Brazil Silvaet al.(2003)
Equipment 11 France Jacquetet al.(1993)
5.1 Finland Miettinenet al.(1999)
0 Brazil Silvaet al.(2003)
0 Brazil Silvaet al.(2003)
- The prevalence includesthe resultsof two or moreplants
Contaminationroutes and analysis in foodprocessing environments 543